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Specific Heat Calcs
Question | Answer |
---|---|
If 200 grams of water is to be heated from 24.0°C to 100°C to make a cup of tea, how much heat must be added? The specific heat of water is 4.18 J/g°C | Q = 63,536 J |
The specific heat of wood is 2.03 J/g°C. How much heat is needed to convert 550g of wood at -15.0°C to 10.0°C? | Q = 27, 912.5 J |
What is the total amount of heat needed to change 2.25 kg of silver at 0.0°C to 200.0°C? The specific heat of silver is 0.129 J/g°C | Q = 58,050 J |
Five (5) grams of copper was heated from 20°C to 80°C. How much energy was used to heat Cu? (Specific heat capacity of Cu is 0.385 J/g∙°C) | Q = 115.5 J |
How much heat is released when 30 g of water at 96°C cools to 25°C? The specific heat of water is 4.186 J/g°C. | Q = -8912 J (negative as heat was lost) |
How much heat does it take to increase the temperature of a 540.6-g sample of Fe from 20.0 °C to 84.3 °C? The specific heat of iron = 0.450 J/g °C. | Q = 15642 J |